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I can not say that I fully understand your problem, or that I fully understand antenna theory. Some things I did on mine was to keep the potentially conductive metal vertical and other metal parts - coil, ground plane radials - apart; isolated both by insulators, and alignment to each other. I kept the vertical above the coil bridging the GP and the vertical with the opposite ends of the coil. The coax shield was directly connected to the ground plane, and the coax center conductor was tapped into the coil for best SWR. Perhaps the thickness of the vertical played into the match (don't know, just mulling). It is 1 1/4" at the base tapering to 1/2" at the tip. Also, as I was led to believe, I set the ground plane at 45* angle downward from the horizontal in order to help me achieve match easier. I wanted to keep them horizontal for a superior radiation angle, but desired a 50ohm match at the feed point more.

I wanted to toss mine, too, especially when it kept blowing down and SWR moved around on me, but I didn't.

Hope this helps.

As we say at the Home Depot (thanks for shopping with us), "You can do it, we can help"

<blockquote data-quote="HomerBB" data-source="post: 142234" data-attributes="member: 8569">I can not say that I fully understand your problem, or that I fully understand antenna theory. Some things I did on mine was to keep the potentially conductive metal vertical and other metal parts - coil, ground plane radials - apart; isolated both by insulators, and alignment to each other. I kept the vertical above the coil bridging the GP and the vertical with the opposite ends of the coil. The coax shield was directly connected to the ground plane, and the coax center conductor was tapped into the coil for best SWR. Perhaps the thickness of the vertical played into the match (don&#039;t know, just mulling). It is 1 1/4&quot; at the base tapering to 1/2&quot; at the tip. Also, as I was led to believe,&nbsp; I set the ground plane at 45* angle downward from the horizontal in order to help me achieve match easier. I wanted to keep them horizontal for a superior radiation angle, but desired a 50ohm match at the feed point more. I wanted to toss mine, too, especially when it kept blowing down and SWR moved around on me, but I didn&#039;t.Hope this helps. As we say at the Home Depot (thanks for shopping with us), &quot;You can do it, we can help&quot;</blockquote>

[QUOTE="HomerBB, post: 142234, member: 8569"] I can not say that I fully understand your problem, or that I fully understand antenna theory. Some things I did on mine was to keep the potentially conductive metal vertical and other metal parts - coil, ground plane radials - apart; isolated both by insulators, and alignment to each other. I kept the vertical above the coil bridging the GP and the vertical with the opposite ends of the coil. The coax shield was directly connected to the ground plane, and the coax center conductor was tapped into the coil for best SWR. Perhaps the thickness of the vertical played into the match (don't know, just mulling). It is 1 1/4" at the base tapering to 1/2" at the tip. Also, as I was led to believe, I set the ground plane at 45* angle downward from the horizontal in order to help me achieve match easier. I wanted to keep them horizontal for a superior radiation angle, but desired a 50ohm match at the feed point more. I wanted to toss mine, too, especially when it kept blowing down and SWR moved around on me, but I didn't. Hope this helps. As we say at the Home Depot (thanks for shopping with us), [i]"You can do it, we can help"[/i] [/QUOTE]

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